Two titans of classic rock (feel old, that's what we're calling '90s alternative now) and Lollapalooza regulars, Nine Inch Nails (Lolla '91, '08, '13, Chile '14) and Soundgarden (Lolla '92, '96, '10, Chile '14) bro down for the summer in a coheadlining tour. Both started out a little funkier in the 1980s, both released their seminal albums on the same day in March of 1994, both released comfortably familiar comeback albums over the last couple years. The pairing makes a lot of sense to some degree, but it's also a bit surprising. Trent Reznor has thrown some shade at Chris Cornell on Twitter in the past. After original opening act Death Grips imploded, Oneohtrix Point Never fills in. What, were Candlebox and Stabbing Westward not available?